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72 lines
2.0 KiB
C++
72 lines
2.0 KiB
C++
//===- BlockVerifier.h - FDR Block Verifier -------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// An implementation of the RecordVisitor which verifies a sequence of records
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// associated with a block, following the FDR mode log format's specifications.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_XRAY_BLOCKVERIFIER_H
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#define LLVM_XRAY_BLOCKVERIFIER_H
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#include "llvm/XRay/FDRRecords.h"
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#include <array>
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#include <bitset>
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namespace llvm {
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namespace xray {
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class BlockVerifier : public RecordVisitor {
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public:
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// We force State elements to be size_t, to be used as indices for containers.
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enum class State : std::size_t {
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Unknown,
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BufferExtents,
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NewBuffer,
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WallClockTime,
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PIDEntry,
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NewCPUId,
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TSCWrap,
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CustomEvent,
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TypedEvent,
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Function,
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CallArg,
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EndOfBuffer,
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StateMax,
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};
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private:
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// We keep track of the current record seen by the verifier.
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State CurrentRecord = State::Unknown;
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// Transitions the current record to the new record, records an error on
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// invalid transitions.
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Error transition(State To);
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public:
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Error visit(BufferExtents &) override;
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Error visit(WallclockRecord &) override;
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Error visit(NewCPUIDRecord &) override;
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Error visit(TSCWrapRecord &) override;
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Error visit(CustomEventRecord &) override;
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Error visit(CallArgRecord &) override;
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Error visit(PIDRecord &) override;
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Error visit(NewBufferRecord &) override;
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Error visit(EndBufferRecord &) override;
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Error visit(FunctionRecord &) override;
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Error visit(CustomEventRecordV5 &) override;
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Error visit(TypedEventRecord &) override;
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Error verify();
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void reset();
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};
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} // namespace xray
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} // namespace llvm
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#endif // LLVM_XRAY_BLOCKVERIFIER_H
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